2-Point Fluoride Sensor Calibration (Cal) - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Calibrating the controller
2-point fluoride sensor cali‐
9.3.2
bration (CAL)
Correct sensor operation
Correct measuring and metering
–
is only possible if the sensor is
working perfectly
Observe the sensor operating
–
instructions
The carrying out of a 2-point cali‐
–
bration is strongly recommended
and is to be preferred to other
methods
For calibration the sensor must
–
be removed and refitted in the in-
line probe housing. To do this,
observe the operating instructions
of your in-line probe housing
Material required for calibration of fluoride
sensors:
Two test containers with calibrating
n
solution
78
Measuring and control behaviour
of the controller during calibration
During calibration the actuating out‐
puts are deactivated. Exception: a
basic load or a manual control vari‐
able has been set. This remains
active. The measured value output
[standard signal output mA] is frozen,
corresponding to its settings in the
mA output menu.
When calibration/testing has been
completed successfully, all of the
error checks relating to the measured
value are restarted. The controller
saves all the determined data for zero
point and slope upon a successful
calibration.
Used calibration solution
Dispose of the used calibration solu‐
tion. For more information: see cali‐
bration solution safety data sheet.
Two test containers with a calibration sol‐
ution are required for calibration. The fluo‐
ride content of the calibrating solutions
should be at least 0.5 ppm F
each other. The sensor should be rinsed
thoroughly with fluoride-free water when
changing the calibrating solution.
apart from
-